Showing posts with label hepatitis b. Show all posts
Showing posts with label hepatitis b. Show all posts

Thursday, March 19, 2009

FDA: Insulin Pens and Insulin Cartridges Must Not Be Shared

The U.S. Food and Drug Administration today issued an alert to health care professionals reminding them that single-patient insulin pens and insulin cartridges should not be used to administer medication to multiple patients due to the potential risk of transmitting blood-borne pathogens such as HIV and the hepatitis viruses.

Insulin pens are pen-shaped injector devices that contain a disposable needle and either an insulin reservoir or an insulin cartridge. The devices typically contain enough insulin for a patient to self-administer several doses of insulin before the reservoir or cartridge is empty. All insulin pens are approved only for single-patient use (one device for only one patient).

The FDA is aware of incidents at two undisclosed hospitals involving more than 2,000 people in which the cartridge component of the insulin pens were used to administer insulin to multiple patients, although the disposable needles were reportedly changed among patients.

“Insulin pens are designed to be safe for one patient to use one pen multiple times with a new, fresh needle for each injection,” said Amy Egan, M.D., deputy director of safety at the FDA’s Division of Metabolism and Endocrinology Products in the Center for Drug Evaluation and Research. “Insulin pens are not designed, and are not safe, for one pen to be used by more than one patient, even if needles are changed between patients due to the risk of transmitting blood-borne pathogens.”

Patients exposed to shared insulin pens are being contacted by the two hospitals and are being offered testing for hepatitis and HIV. Some of the potentially exposed patients have reportedly tested positive for the hepatitis C virus, although it is not known if the virus was spread as a result of insulin pen sharing.

The FDA is working with the Centers for Disease Control and Prevention and professional organizations to address infection control issues related to insulin pens.

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Friday, September 19, 2008

CDC Expands Testing Recommendations For Chronic Hepatitis B Virus Infection

The U.S. Centers for Disease Control and Prevention (CDC) today (September 18, 2008) published new recommendations for health care providers that are designed to increase routine testing in the United States for chronic hepatitis B, a major cause of liver disease and liver cancer. CDC recommends testing all individuals born in Asia and Africa, as well as testing additional at-risk populations, including men who have sex with men (MSM) and injection-drug users (IDUs). The recommendations, published today in CDC′s Morbidity and Mortality Weekly Report (MMWR) Recommendations & Reports, also for the first time give health professionals guidance for effective management of chronically infected hepatitis B patients.

“Chronic hepatitis B affects the lives of more than one million Americans, many of whom do not even know they are infected. These new recommendations are critical to identifying people who are living with the disease without the benefits of medical attention,” said John W. Ward, M.D., director of CDC′s Division of Viral Hepatitis. “Testing is the first step to identify infected persons so that they can receive lifesaving care and treatment, which can break the cycle of transmission, slow disease progression, and prevent deaths from liver cancer.”

In the United States, chronic hepatitis B is the underlying cause of an estimated 2,000 – 4,000 deaths each year from cirrhosis and liver cancer. The CDC recommendations are key to increasing the early diagnosis of chronic hepatitis B virus (HBV) infection, since many of the estimated 800,000 – 1.4 million Americans with chronic HBV infection have no symptoms and are unaware of their disease.

Highlights of the recommendations

The new testing recommendations build upon and reinforce past recommendations to test all pregnant women, infants born to infected mothers, household contacts and sex partners of infected individuals, and people with HIV.

Along with continued testing of those groups, routine testing is now recommended for additional populations, including:

* Individuals born in Asia, Africa, and other geographic regions with 2 percent or higher prevalence of chronic HBV infections: Previous CDC recommendations called for testing of people born in areas with 8 percent prevalence or higher. Expanded testing is essential since the rate of liver cancer deaths and chronic HBV in the United States remains high among foreign-born U.S. populations from these areas. For example, nearly one in 12 Asian Americans and Pacific Islanders living in the United States is HBV-infected, and one-third or more are unaware.
* Men who have sex with men and injection drug users: Routine testing is needed for these persons since both have a higher prevalence of chronic HBV infection than the overall U.S. population. Up to 3 percent of MSM and up to 6 percent of IDUs are estimated to be chronically infected with HBV, compared to three tenths of one percent of the general population.
* Persons with abnormal liver function tests (not explained by other conditions) and persons who require immunosuppressive therapy (e.g., chemotherapy for malignant diseases).

The new CDC report also gives recommendations for referral of HBV-infected persons to specialists for ongoing monitoring and medical care. Such guidelines are needed now to assist providers, since most of the effective medications for chronic HBV treatment have become available only in the last five years. In addition, the recommendations advise healthcare providers to provide culturally-sensitive ongoing patient education, begin lifelong monitoring for progression of liver disease, and ensure protection of household members and other close contacts of infected persons.

Testing recommendations are a critical component of CDC’s strategy to eliminate HBV transmission. CDC continues to work with the medical community to promote comprehensive prevention and treatment efforts for HBV, which include vaccination for all infants and at-risk adults; catch-up vaccination of previously unvaccinated children; routine screening for all pregnant women; treatment of newborns of infected or untested mothers; and testing household contacts and sex partners of HBV-infected persons.

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Thursday, September 4, 2008

FDA Approves DNA Test to Measure Hepatitis B Virus Levels

The U.S. Food and Drug Administration today approved the first nucleic acid test for hepatitis B virus (HBV) that measures the amount of viral DNA (viral load) in a patient’s blood. Assessing a patient’s viral load provides health care professionals with a highly sensitive method for gauging the progress of antiviral therapy in patients with chronic HBV infections.

The COBAS TaqMan HBV Test extracts and then amplifies sections of viral DNA from human plasma or serum. The viral DNA sections are measured to establish a baseline level before beginning treatment, and then used again during treatment to assess an individual’s response to therapy. (The baseline level of hepatitis B virus should decrease with successful treatment.) The test is used with other clinical findings, such as results from biochemical and serological testing.

“Measuring a patient’s HBV viral load is an important aspect of managing chronic hepatitis B infections,” said Daniel G. Schultz, M.D., director of FDA’s Center for Devices and Radiological Health. “The COBAS TaqMan test gives health care providers a new and sensitive tool for this process.”

HBV is the most serious type of viral hepatitis, infecting about two billion people worldwide each year, according to the World Health Organization. A vaccine for HBV has been available in the United States since 1982. However, according to the Centers for Disease Control and Prevention, about 1.25 million people in the United States have chronic hepatitis B. Another 60,000 become infected each year and some 5,000 die from hepatitis B-related complications.

HBV is spread through sexual exposure, use of infected needles, and transmitted from infected mother to child during birth. Symptoms occur in about 70 percent of patients, and include abdominal pain, jaundice, fatigue, loss of appetite, nausea, and vomiting.

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